204004001000 has 32 divisors (see below), whose sum is σ = 477369364680. Its totient is φ = 81601600000.

The previous prime is 204004000969. The next prime is 204004001009. The reversal of 204004001000 is 100400402.

It can be written as a sum of positive squares in 4 ways, for example, as 113680911556 + 90323089444 = 337166^2 + 300538^2 .

It is not an unprimeable number, because it can be changed into a prime (204004001009) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 102001001 + ... + 102003000.

Almost surely, 2^204004001000 is an apocalyptic number.

204004001000 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

204004001000 is an abundant number, since it is smaller than the sum of its proper divisors (273365363680).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

204004001000 is a wasteful number, since it uses less digits than its factorization.

204004001000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 204004022 (or 204004008 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 11.

Adding to 204004001000 its reverse (100400402), we get a palindrome (204104401402).

The spelling of 204004001000 in words is "two hundred four billion, four million, one thousand".